The manufacturer should have sent you a config file named either markcfg7 BslCAD.cfg or LmcPar.cfg
that you import when you add your laser to LightBurn.
This config file ideally holds the correct timings for the Device Settings here:
This page explains the galvo timings well:
Most brands don’t care too much about the timing values. If you see 100us in the Delay Defaults, that’s an indication that you either didn’t import the config file, or that the config file didn’t contain any timing info, and LightBurn populated the settings with the default values.
Short answer: Yes.
It will still engrave with wrong timing settings. Take a look at this thread to understand what you need to look out for when chasing the perfect timings.
The video from MakrTheory is my preferred way to calibrate.